Carbureter.



No. 705,3!4. Patented July 22, I902.

F. C. BLAKE.

GARBURETER.

(Appliostibn mm Nov. 5, 1901.

2 Sheets-Sheet I,

(No Model.)

J WWZWM A nomsrs No. 7053M.

Patented July 22,1902. F. C. BLAKE.

CABBURETEB. \Application filed Nov. 5, 1901 2 She sts-8heet 2.

(No Model.)

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UNITED Sterne-P TENT @rri c'nf.

FRANCIS CLAUDE BLAKE, OF LONDON, ENGLAND.

CARBURETER.

SPECIFICATION forming part of Letters Patent No. 705,314, dated. July 22, 1902.

Application filed November 5, 1901- Serial No. 81,270. (No model.) I

To all whom itvnay concern: is preferably dome-shaped and the petrol- Beitknown thatLF ANcIs CLAUDE BLAKE, chamber bis of circular or other shape seengineer, a subject of the King of Great Britcured to its bottom, thej fiexible diaphragm or till, residing at Motor Works, Station aven ue, cap 0 of the petrol-chamber forming the base KewGardens, London, England, have inventof the vacuum chamber. Preferably the d a certain new and useful Improvement in base and walls of the petrol-chamber are rigid, arbureters, of which the following is a full, while .the flexible diaphragm c is of concenear, and exact description, and for which I trically-corrugated sheet metal, such as Ger- -.ve applied for Letters Patent in Great Britman silver, nickel, or copper. Ordinary air- 1 #1, dated April 15, 1901; in Germany,-dated inlets,consisting of perforated disks arranged y 3, 1901; in France, dated August 20, 190.1, to fhit or miss corresponding holes in the t in Belgium, dated August 20,1901. chamber a, are shown at d and e. A branch his invention relates to carbureting appipe f delivers to the motor, and a casing 91 P ttus for explosionengines, andin particu-- may depend from the branch pipe to within 5 0 improvedmeans for feeding the petrol the chamber a. v

her hydrocarbon to the motor: of a mo- To the center of the flexible diaphragm c -ar. This petrol-feed device has a douof the petrol-chamber b is integrally secured efition and possesses advantages overthe a nozzle or spout h, projecting to about the nry float feed or similar devices for'this center of the height ofchamberaand shielded, p p e. v l preferably, by the dependent casing g. This e'xnvention consists of a petrol-chamber spout or jet has a very'fine bore, and the porformin preferably, the base of the vacuumtion of the spout within the petrol-chamber @hambeofthe carbureter and havingaflexiforms a seat for a ball 6, arranged to close D ia 'iragm to which is secured a nozzle or the lower bore of the spout. Ball 2' is sup- 5 Spout, Witha ball-valve or,other means for? ported upon an adjustable rod is within a cup cutting off he petrolfromthe spout, the in-f .Z. This cup is of such internal diameter termittent fed of; petrol from within the pe that the ball 2' can rest only upon the rod 10. trol-chambei and through the spout being The latter can be adjusted from outside the consequent ipon, first, the action of the vacdevice, so that by turning the rod the position 30 uum on theiflexible diaphragm, and, secof theballc'can be slightly raised orlowered. ondly, the nturn or rebound of the dia The petrol is fed in any suitable manner phragrn. Tie petrol-chamber is constantly from the reservoir to the petrol-chamber b, Supplied fron a petrol reservoir by either and it may conveniently be admitted at inlet pressure or gravity, and the vacuum acting m. I It may be necessary to readjust the rod 35 upon the flexible diaphragm of the chamber it when filling up the petrol-reservoir to avoid 18 caused by the aspiration of the motor in .flooding the chamber a, since the pressure of taking in its charge. The feed is regulated the full head of petrol may tend to lift the by adjusting the amount of lift of the dia-' diaphragm slightly. A small quantity of air phragm. The diaphragm is made of any suitor vapor may be allowed to remain in the pe- 4 able flexible material sufticientlyspringy and trOLchamber, and a cage may be provided not acted upon bythe petrol, and one or more additionally around the ball '5 or its cup Z to air-inlets of any adjustable pattern are proprevent the ball getting out of position. A vlded for the ctrbureter to adjust the mixshield 91, of conical shape, may be arranged ture and regulate the degree of vacuum. as shown to prevent the petrol from being 45 Upon the accompanying drawings, Figure thrown out through d and also to breakup 1 1s a' sectional'elevation of one form of the the petrol pumped in by the reflex action of invention. Fig, 2 represents a detail modithe diaphragm. fication in the same. Fig. 3 is a sectional ele-- The position of the petrol injected into the vatlon of a modified form of carburetor, and chamber a by the reaction of the diaphragm 5 Fig. 4 is a plan view (seen from underneath) is immaterial, since it is drawn out of the of the base of the jet. chamber a to the explosion-chamber by the Referring toEig. 1, the vacuum-chamber a next suction-stroke of the piston. The petrol,

in fact, may be directly projected upon the cone n, or it may be sprayed upon the casing g, or, again, it may rest upon the top of the diaphragm until the next suction-stroke of the engine.

Instead of the balli a hollow conical valve, Fig. 2, of an arrow-head shape may be seated loosely and balanced upon the top of rod k, its point closing the lower entrance to spout h and otherwise acting as the ball in Fig. 1. Any ordinary and suitable non return valve may be arranged within the petrolsupply pipe, acting in conjunction with the pumping action of the diaphragm.

When the motor sucks from the vacuumchamber a, the spout h and flexible diaphragm c are drawn inwardly, the seat thus rising from the ball t, and petrol in the form of spray is drawn into the casing where it meets the incoming air, and these pass to the motor together. The jet of petrol so withdrawn is replaced from the reservoir-supply, and when the suction ceases the flexible plate c subsides by its own elasticity, and a further quantity of petrol is forced or pumped up through the spout, leaving a partial charge ready for the next aspiration or stroke of the piston.

The modification shown in Fig. 3 has been designed to dispense with a non-return valve between petrol inlet and tank to avoid having to readjust the valve when refilling the tank and to avoid all possible flooding. The valve here consists of a plug in the shape of a peg-top or spinning-top 0, mounted upon a spiral spring 1) and centered in the jet h and adjustable rod 7;, which latter is made hollow. The lower part of the seat of jet h is provided with a number of grooves or slots h, (see Fig. 4,) or,alteruatively, radial flats may be formed upon the top of the conical surface 0, the object in either case being to allow access of petrol to the spout at all times. The lower part of the top-shaped valve 0 can close or block the hollowed part of rod 70. The rod at its lower part is provided with a number of ports through which petrol may be admitted from the inlet-pipe m. This latter, it will be noticed, does not now deliver directly into the chamber 1). The remaining construction is clearly shown on the drawings. a" is a glandnut, s packing within the same, and t the wheel for regulating the valve. The action of this form of valve 0 is similar to the previous; but when the diaphragm c rises the top-shaped valve 0 is raised by means of the spring p. Petrol is now sucked out through jet h into a, as before, and fresh petrol is also supplied to the chamber 1) through 70. \Vhen this stroke of the piston has ceased, the diaphragin c subsides and tube 70 is blocked by the base of the top-shaped valve 0, the reflex action of the diaphragm pumping up a further supply of petrol, as explained above.

It is to be noted in both forms of the car- 6 bureter that from the diaphragm downward the lower part of the device is made in one piece. Thus a new base to chamber a can be screwed into position without trouble should 5 this ever become necessary. 1'

Where heavy hydrocarbons are used,it may. be necessary to add to the device one of the ordinary chambers or arrangements whereir such hydrocarbon is vaporized by means 0 the heat from the exhaust or otherwise.

Having thus described my invention, whj I claim as such, and desire to secure by Lg ters Patent, is

1. A double-acting feed device for useim trol-engines comprising a flexible diaphra, forming the bottom of the suction-cham' and having a spout, petrol being interi tently fed into the suction-chamber first ing the lift of the diaphragm and by re n of the suction action of the piston, an F ondly by the return of the diaphragm Its original position as the suction action 0 2. A petrol-feed device, consisting of 9 ble diaphragm forming the base of a siy' chamber and the cover for a petrol-ch 9" said diaphragm having a spout deli j g from the petrol-chamber into the e chamber, a valve located within saidf'ietrolchamber and arranged to close sai spout from underneath, said valve being {Qu 9 upon a screwed rod and adjustalle 'O the exterior of the device, and said etpl-chamher being supplied from the petol tank.

3. In a petrol-feed device havn a flexible diaphragm fitted with a jet, a blow conical Io plug balanced loosely upon a rid adjustab from the exterior of the appaatus and arranged to close the jet.

4. A petrol-feed device, com rising a flexible diaphragm forming a cove] for a petrol- 5 chamber and fitted With a spiut, a plug valve arranged to be guided by entering the said spout from underneath aid to close an adjustable hollowed rod comm uhicatin g \vl h the petrol-inlet, said plug alhwin g at all times 1 I access from the petrol-chamber to the jet and being mounted upon a spriig within the petrol-chamber, and arrangedto follow the rise and fall of the jet.

In witness whereof I havehereunto set my I 5 hand in presence of two witnesses.

FRANCIS OLA'JDE BLAKE.

Witnesses:

V ICTOR 1". Funny, WALTER J. SKERTEN. 

